<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>

<body>
  <!-- <script src="./dist/01-class.js"></script> -->
  <!-- <script src="./dist/02-constructor.js"></script> -->
  <script src="./dist/03-extends.js"></script>
</body>

</html>